US2585060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical cell apparatus for testing liquids
Assignee: US Filter Wallace and Tiernan Inc
•
Filing: 1948-03-05
•
Granted: 1952-02-12
•
Expires: 1968-03-05
Abstract
No abstract record available.
Inventors
- 👤 Charles F Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:02
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045; G01N27/28; G01N27/30; G01N27/38; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C02F2001/46119
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US373691A
Cited
US395974A
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US1161750A
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US1524937A
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US1941040A
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CH177968A
Cited
US2350378A
Cited
US2415067A
Cited
US2278248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |